The AV scanner is probably reacting to the fact that theRenamer.exe extracts DLLs to a temp folder and then loads it.They aren't scanning the file, but classifying the behavior.(I've always done it this way, since day 1... no idea why only now all these false positives happen).

In 7.48, the loading of Dlls has changed. They are now stored in the install folder (during installation).Hopefully this fixes the virus warning nightmares.